After MTM has its way, the already formidable is transformed into one scary family hauler. For starters, MTM provides power boosts in increments, beginning with a mere 656-hp variant of Audi's sensational twin-turbo 5.0-liter V10. That's enough to hike top speed to more than 173 mph.

But wait. Serious gearheads may want to check out the full-house 702-hp kit, which inflates top end to 193 mph and slashes 0-60-mph acceleration to less than 3.9 seconds. MTM achieves this level of performance with a series of modifications, including a reprogrammed engine control module and the application of a sport air filter and a stainless steel exhaust system with downstream throttle control.

Naturally, the rest of the hardware has been substantially upgraded, starting with oversize six-piston brakes and monoblock calipers, as well as a set of 285/30ZR21 rubber mounted on Bimoto cast alloy rims. MTM also offers lighter 20-inch forged alloy wheels.

To gild this go-fast lily, MTM further embellishes the RS6 with a carbon fiber front spoiler lip and rear diffuser.